package com.chauncy.DMS.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharacterEncodingFilter implements Filter {
	 private String charset = "UTF-8"; //默认编码设置为 UTF-8
	public void destroy() {
		// TODO Auto-generated method stub

	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) arg0;
        HttpServletResponse response = (HttpServletResponse) arg1;
        request.setCharacterEncoding(charset); //只能处理post方式的请求乱码
        response.setCharacterEncoding(charset);
        response.setContentType("text/html;charset=" + charset);
        arg2.doFilter(request, response);

        
	}
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		String charset = arg0.getInitParameter("characterEncoding");
		if (charset != null && !charset.equals("")) {
            this.charset = charset;
        }
	}

}
